The Grass Valley man arrested last weekend in the unintentional shooting death of another man is now facing greater legal liability. It was originally reported that 25-year-old Jason Hallieb had shot himself. But it was later determined that 26-year-old Joshua Crook had fired the fatal shot and he was initially arrested on one felony charge of gross negligence in the discharge of a firearm. And now Assistant Nevada County District Attorney Chris Walsh says a charge of felony assault with a firearm has been added, since the investigation has also found that Crook allegedly pointed the gun at Hallieb’s face…